President Trump said Tuesday that any knowledge pertaining to the mysterious disappearance and presumed death of writer Jamal Khashoggi by Saudi Arabia leadership "would be bad."

"Turkey and Saudi Arabia are looking at it very strongly and it depends if the king or crown prince knew about it, in my opinion. Number one, what happened? But, whether or not they knew about it. If they knew about it, that would be bad," Trump said during an interview on FOX Business' "Trish Regan Primetime."

State Department Correspondent Rich Edson joined Fox News Radio's Guy Benson and Marie Harf to discuss the latest on the missing Saudi journalist.

On the latest: It appears as though the line is they're continuing the investigation. In fact, the Secretary just put out a statement regarding his meetings throughout the day with the Crown Prince, Muhammad Bin Salman, King Salman today, he says that the Saudi leadership strongly denied any knowledge of what took place and it's his assessment, the Secretary's, that from these meetings there is a serious commitment to determine all the facts and ensure accountability. But, there is still nothing from the Saudi government. (2:52)

On if the Saudis can do a credible investigation: The public statements from the Secretary are that there is going to be an investigation. There will be accountability from the Saudi government, but there are plenty, both within and outside the U.S. government, who think that's suspect. (4:05)

On the U.S. response if Saudi Arabia is found responsible: If the result of this investigation is what has been long suspected and what has been floated in the press before that it was some type of rogue element, the President even said himself after speaking to King Salman yesterday, that it could be a rogue element that is responsible for all of this. The question then becomes does the United States hold that person responsible or hold whole Saudi government responsible? (5:42)

On Pompeo's meetings: This is a situation that puts the Trump administration in a very difficult situation because the Saudi's are such a strong ally in the region. The government doesn't share the same values that the United States does and that's always been a dance that the United States has done, but in this case it has really come o the surface. (9:22)